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Quantitative Analysis of Cell Edge Dynamics during Cell Spreading
Published on: May 22, 2021
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The NHSL1-A complex interacts with the Arp2/3 complex and controls cell migration efficiency and chemotaxis.
Shamsinar Jalal1,2, Tommy Pallett1,3, Sheng-Yuan Wu1
1King's College London, Krause group, Randall Centre for Cell and Molecular Biophysics, New Hunt's House, Guy's Campus, London, SE1 1UL, UK.
Biorxiv : the Preprint Server for Biology
|March 31, 2025
Summary
Nance-Horan Syndrome-like 1 (NHSL1)-A protein complex promotes mesenchymal cell migration by regulating Arp2/3 activity. This complex enhances cell speed and chemotaxis, offering new insights into cell migration regulation in development and disease.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Cell migration is vital for development and implicated in diseases.
- The Scar/WAVE complex, via Arp2/3, drives lamellipodia protrusion for mesenchymal cell migration.
- NHSL1 protein isoforms interact with Scar/WAVE, with NHSL1-F1 inhibiting migration.
Purpose of the Study:
- To investigate the role of the Nance-Horan Syndrome-like 1 (NHSL1)-A1 isoform in cell migration.
- To determine how the Scar homology domain (SHD) of NHSL1-A influences complex formation and localization.
- To elucidate the mechanism by which NHSL1-A regulates Arp2/3 complex activity and cell migration.
Main Methods:
- Investigated NHSL1-A1 isoform function and complex formation.
- Utilized techniques to analyze protein-protein interactions and domain sufficiency (SHD).
- Examined the role of the WCA domain in NHSL1 and its interaction with Arp2/3, including phosphorylation by GSK3.
Main Results:
- The NHSL1-A SHD is sufficient to form a complex with NHSL1-A proteins, replacing Scar/WAVE and localizing to lamellipodia.
- NHSL1-A complex, through its WCA domain, promotes cell migration speed and chemotaxis, unlike NHSL1-F1.
- Phosphorylation of the NHSL1 WCA domain by GSK3 enhances Arp2/3 interaction, modulating lamellipodial activity.
Conclusions:
- NHSL1-A forms a functional complex that promotes mesenchymal cell migration and chemotaxis.
- NHSL1-A provides an alternative regulatory pathway for Arp2/3 complex activity.
- These findings reveal a novel mechanism controlling Arp2/3 activity crucial for cell migration in development and disease.
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